:root{--bg-dark:#0f1115;--bg-card:#181b21;--bg-accent:#22262d;--text-main:#f0f0f0;--text-muted:#8b92a5;--primary:#e62c2d;--primary-hover:#ff3334;--success:#1cd45d;--warning:#f1c40f;--border:#ffffff1a;--glass:#181b21b3}body{background-color:var(--bg-dark);color:var(--text-main);background-image:radial-gradient(circle at 100% 0,#e62c2d0d,#0000 400px);margin:0;padding:0;font-family:Inter,sans-serif}*{box-sizing:border-box}h1,h2,h3{margin:0;font-weight:600}.app-container{flex-direction:column;min-height:100vh;display:flex}header{background-color:var(--glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:100;justify-content:space-between;align-items:center;padding:1.5rem 2rem;display:flex;position:sticky;top:0}.logo{color:#fff;letter-spacing:-.5px;align-items:center;gap:.75rem;font-size:1.5rem;font-weight:800;display:flex}.logo span{color:var(--primary)}main{flex:1;width:100%;max-width:1400px;margin:0 auto;padding:2rem}.nav-tabs{border-bottom:1px solid var(--border);gap:1rem;margin-bottom:2rem;padding-bottom:1rem;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:.5rem 1rem;font-size:1.1rem;font-weight:600;transition:all .2s}.tab-btn:hover{color:var(--text-main);background:var(--bg-accent)}.tab-btn.active{color:var(--primary);background:#e62c2d1a}.card{background-color:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:1.5rem;transition:transform .2s,box-shadow .2s;box-shadow:0 8px 16px #0003}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:background .2s}.btn-primary:hover{background:var(--primary-hover)}.upload-zone{border:2px dashed var(--border);text-align:center;cursor:pointer;background:#0003;border-radius:12px;padding:4rem 2rem;transition:border-color .2s}.upload-zone:hover{border-color:var(--primary)}.wave-section{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;margin-top:2rem;overflow:hidden}.wave-header{background:var(--bg-accent);border-bottom:1px solid var(--border);color:#fff;padding:1rem 1.5rem;font-size:1.2rem;font-weight:700}.slot-container{flex-wrap:wrap;gap:1rem;padding:1rem 1.5rem;display:flex}.slot-column{border:1px solid var(--border);background:#0003;border-radius:8px;flex:1;min-width:300px;padding:1rem}.slot-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:1rem;font-size:.9rem}.assignment-item{background:var(--bg-accent);border-left:4px solid var(--success);border-radius:4px;justify-content:space-between;align-items:center;margin-bottom:.75rem;padding:1rem;display:flex}.assignment-item.review{border-left-color:var(--warning)}.user-name{color:#fff;margin-bottom:4px;font-weight:600}.car-name{color:var(--text-muted);font-size:.9rem}.tag{background:#ffffff1a;border-radius:12px;margin-left:.5rem;padding:2px 8px;font-size:.75rem}.suggestions-list{flex-wrap:wrap;gap:.5rem;margin-top:1rem;display:flex}